Knob attachment



E. PARKER'.

Knob Attachment.

A No. 226,243. V Patented April 6,1880.

N.PEYERS. PHOTD-LITHDGRAFNER, WASHINQTQN. |10.

il i, UNITED STATES PATENT Orifice".

EMERY PARKER, 0F vNEW' BRITAIN, CONNECTICUT.

KjlNOfB y,TTACH lVI ENT.

SPECIFICATION forming part of Il/etters Patent No. 226,243, dated April 6, 1880.

' Application filed February 16, 1880.

Toall whom t may concern:

Be it known that I, EM'EBY PARKER, of New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements iu Knob Attachments, and I do hereby declare that the following is a full, clear, and exact description thereof, whereby a person skilled in the art can make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Like letters in the ligures indicate the same parts.

My improvement relates to a new and improved form of spindle, which passes through the door and operates the latch, and to which the knobs are attached.

The object of my invention is 'tov provide a cheaper and more easily-constructed spindle than has heretofore been in use, and more especially one in which the screw-holes fon the reception of the screw which holds on. the knob can be punched,and not drilled, as is required with theplain square solid spindles now in use.

In the accompanying drawings, Figure l is a longitudinal section through the middle of my improved spindle and the attached knobs. Fig. 2 is a top view of the spindle detached. Fig. 3 is a side view ot' the spindle detached.

A and B are the knobs. They are provided with the Shanks C and l), which are furnished with square sockets for the reception ot' the end of the spindle, iu the usual manner.

E and F are the two parts of which my improved spindle is composed. The partE is a straight bar oi plate metal, of the width of one side of the square socket in the shank7 and oi' such a thickness that the holes E', which are tapped forthe reception of the screws Gand 1I, can be readily punched. The part ,F is likewise a straight bar of plate metal, of the same width as E, but preferably has its ends F turned up,

asshown in the drawings, so that when the two parts are put together they form a square, which lits into the square opening in the shanks.

G and II are the.screws which hold the knobs upon the ends of the spindle. The screw. G is shown as passing through the bar E to the bar F, against which it presses and forces the two bars apart, so that they completely till the square hole in the shank. The screw H is shown as only reaching through the bar E. This serves to bind the part E against the side of the opening in the shank.

Either form of screw can bc used with my iinproved spindle; but the first is preferred, as heilig the strongest construction.

It will be observed that the holes i'or the screws at the ends ofthe spindle are arranged close together at one end, and at the other they are wide apart. This arrangement permits of a large adjustment for length to be made at one end and a tine adjustment at the other, with a less number of holes than it the same distances were preserved at the two ends.

J is a block or pin in the middle of my improved spindle for the purpose of holding the two parts E and F together and rel-idering the whole spindle stronger and stiffer. It may, however, be on1itted,if desired, without changing the character of my invention.

By means of my improvement the time, trouble, and expense of boring or drilling the holes in the ordinary square solid spindle are avoided, and a much cheaper spindle produced, which is, moreover, suliciently strong and stili for the purpose for which it is intended.

What I claim as my invention is The combination of the part lll, furnished with holes E', the part F, having the turnedup ends F', and the connection J, to form a knob-spindle, substantially as described.

EMERY PARKER..

Witnesses:

THEO. G. ELLIS, WILMOT HOR'roN. 

